What does "PHY" refer to? - Electrical Engineering Stack Exchange
Oct 20, 2021 · a PHY is a type of Ethernet physical layer (eg. 100BASE-TX, 10BASE-T) a PHY is an Ethernet transceiver IC (eg. an IC that converts 100BASE-TX to MII/RMII) a PHY is a physical layer device (more than just the transceiver IC) Is PHY ambiguous and can refer to all of these or did I understand something wrong?
ESP32 GPIO [0] number 2 pin is reserved
May 9, 2025 · I am building a custom ESP32 board to send sensor data via firebase. But when I try to program the WiFi, I got this error. E (111) phy_comm: gpio[0] number: 2 is ...
ethernet - What is the difference between the PHY sublayers PCS, …
Nov 2, 2024 · I'm reading Analog Device's Beginner's Guide to Ethernet. It's really good and goes into concepts like Manchester Encoding, 4B/5B, NRZT, MLT3 which seem to make sense to me. However, it kind of
Difference between USB and ULPI - Electrical Engineering Stack …
What is the difference between USB and ULPI? I know they are closely related, but how they are related is not clear to me. First time I came to know when I was looking at this board (See at the bot...
The SERDES/transceiver design inside the Ethernet MAC controller
Nov 15, 2019 · The 1st and 2nd figures are normal application which transmits the data through copper media with coded information (through PCS/PMD/PMA inside the PHY chip). The interface between the MAC and PHY is SGMII or XAUI for 1G and 10G base-T Ethernet. However, the 3rd figure confuses me.
what is the difference between PHY and MAC chip
Jul 11, 2013 · what is the difference between PHY and MAC chip Ask Question Asked 12 years, 1 month ago Modified 12 years, 1 month ago
Ethernet switch IC ports in MAC and PHY mode
Nov 8, 2021 · I come from analog/RF background and have limited knowledge in digital interfaces. According to TI's articles about Ethernet PHY found here and here, single MAC to single PHY connection seems very
phy - RSET pin function of RTL8211E - Electrical Engineering Stack …
Jul 11, 2018 · I'm using Realtek's ethernet PHY RTL8211E, but can't figure out what's the purpose of pin 'RSET', and how to connect it. The only datasheet I can find is here. On page 12 of the datasheet you provided, it says: And if you look at the high level circuit diagram on page 5, it shows the pin feeds a bandgap stage.
Connecting a PHY to another PHY on a same board
Aug 14, 2022 · Generally, if I'm connecting a PHY to RJ45 connector, I would add center tap capacitors and Bob-Smith termination like below. But if I am connecting a PHY to another PHY, do I still need the Bob-Smith termination? Or can I just have center tap capacitors on both sides like below? Both PHYs share same GND but are powered by different rails.
microcontroller - Ethernet devices polarity reversal support ...
Aug 25, 2022 · Does all Ethernet PHY devices support polarity reversal even if its not mentioned in the datasheet? [I mean polarity reversal by swapping TX+ with TX- (Like connecting TX+ to RX- or TX- to RX+).
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